Esbe GRB301 VRD138-2.5-20-W

Esbe GRB301 VRD138-2,5-20-W GRB series pump group. Which is intended, for example, for supply and heating PN10.
(Actuators/controller available as an accessory.)

- DN20
- Kvs 2.5
-Pump Wilo Yonos PICO 15/1-6
- HVAC number 4630850

For example, cooling is enabled with the right control.

ESBE VRG131 40-25 RP 1 1/2

Dn 40 
PN 10
-10°c / +110°c 
Kvs 25

Expansion tank CP335 12L.

Technical information
- Connection External thread. 3/4". G20
- Operating temperature: Min. -10 °C / Max. 90 °C
- Max. working pressure: 3.0 bar
- Material, container Closed steel expansion tank.
- Material, inner membrane SBR rubber (NOT for drinking water use).
- Container pre-filling 0.5 bar.

Actuator Reversing valve motor

LK Motor 24v 8s / 60 °

Suitable 

Gebwell Qi6 Old
Gebwell Qi9

LK Actuator 24 V NO. (Tensionless. Open). A 4104 NO

Power consumption in continuous use. 1.8 W
Starting current 230 V. 300 mA < 200 ms
Starting current 24 V. 250 mA < 2 minutes
Voltage tolerance 230 V. +10% / -10%
Voltage tolerance 24 V +20% / -10%
Ambient temperature. 0 to 60 °C
Encapsulation class. IP54
Protection class III
Thrust 100 N ±5%
Position indicator. The blue ring is visible in the upper position
Installation. Click lock in the adapter
Stroke length 4 mm
Impact time approx. 6 minutes
Cable 1 meter, 2 x 0.75 mm2

The supplied adapters are suitable for manifolds VKF, VKF-i and VKF-RF

The LK Actuator is an electrothermal actuator for room/area-specific adjustment of the LK Manifold. There are different types of actuators, de-energized open (NO) and de-energized closed (NC). The actuator is used with the LK Wired or LK Wireless room control system.

LK Actuator 24 V NO. (Tensionless. Close). A 4004 NC

Power consumption in continuous use. 1.8 W
Starting current 230 V. 300 mA < 200 ms
Starting current 24 V. 250 mA < 2 minutes
Voltage tolerance 230 V. +10% / -10%
Voltage tolerance 24 V +20% / -10%
Ambient temperature. 0 to 60 °C
Encapsulation class. IP54
Protection class III
Thrust 100 N ±5%
Position indicator. The blue ring is visible in the upper position
Installation. Click lock in the adapter
Stroke length 4 mm
Impact time approx. 6 minutes
Cable 1 meter, 2 x 0.75 mm2

The supplied adapters are suitable for manifolds VKF, VKF-i and VKF-RF

The LK Actuator is an electrothermal actuator for room/area-specific adjustment of the LK Manifold. There are different types of actuators, de-energized open (NO) and de-energized closed (NC). The actuator is used with the LK Wired or LK Wireless room control system.

LK Actuator 230V NO. (Tensionless. Close). A 2004 NC

Power consumption in continuous use. 1.8 W
Starting current 230 V. 300 mA < 200 ms
Starting current 24 V. 250 mA < 2 minutes
Voltage tolerance 230 V. +10% / -10%
Voltage tolerance 24 V +20% / -10%
Ambient temperature. 0 to 60 °C
Encapsulation class. IP54
Protection class III
Thrust 100 N ±5%
Position indicator. The blue ring is visible in the upper position
Installation. Click lock in the adapter
Stroke length 4 mm
Impact time approx. 6 minutes
Cable 1 meter, 2 x 0.75 mm2

The supplied adapters are suitable for manifolds VKF, VKF-i and VKF-RF

The LK Actuator is an electrothermal actuator for room/area-specific adjustment of the LK Manifold. There are different types of actuators, de-energized open (NO) and de-energized closed (NC). The actuator is used with the LK Wired or LK Wireless room control system.

LK Actuator 230V NO. (Tensionless. Open).A 2104 NO

Power consumption in continuous use. 1.8 W
Starting current 230 V. 300 mA < 200 ms
Starting current 24 V. 250 mA < 2 minutes
Voltage tolerance 230 V. +10% / -10%
Voltage tolerance 24 V +20% / -10%
Ambient temperature. 0 to 60 °C
Encapsulation class. IP54
Protection class III
Thrust 100 N ±5%
Position indicator. The blue ring is visible in the upper position
Installation. Click lock in the adapter
Stroke length 4 mm
Impact time approx. 6 minutes
Cable 1 meter, 2 x 0.75 mm2

The supplied adapters are suitable for manifolds VKF, VKF-i and VKF-RF

The LK Actuator is an electrothermal actuator for room/area-specific adjustment of the LK Manifold. There are different types of actuators, de-energized open (NO) and de-energized closed (NC). The actuator is used with the LK Wired or LK Wireless room control system.

LK Room thermostat S2, 24V NC

Technical data LK Room thermostat S2
Voltage 24 V AC (20...30 V, 50...60 Hz) Nc
de-energized close
Switching power max. 22 W (625 mA)
Own power 2 W
Max. 5 pcs LK Actuator 24 V NO per room thermostat
Temperature range 5...45 °C
Input for temperature drop -3 K
The duration of the self-modulation period is 42 min
Self-modulation range 2 K
Color: nest and cover frame white RAL 9003, front glass high gloss white/ice gray
Protection class III
Enclosure class IP30
Storage temperature –25...+80 °C
Relationship humidity (storage) <80% non-condensing
Operating temperature 0...+50 °C
External sensor: length 3 m, model NTC 10 kΩ (optional)
Dimensions 80 × 112 × 16 mm
Covering area with installed cover frame 80 × 112 mm Covering area without installed cover frame 65 × 98 mm

LK Room thermostat S2, 24V NC Is a silent electronic room thermostat equipped with a Triac output and electronic feedback. Available in two models: S2 and S2 EXT. LK External sensor ICS/S2 for floor temperature control. The thermostat is placed on top of the device box or directly on top of the wires brought from the wall. When installing on top of the device box, the supplied cover frame is used.

Spare parts
• LK Cover frame S2, included in the package (product no. 33454).
pay particular attention to:
• Self-technology through a pulse signal improves energy efficiency modulation.
• Modern design and high-gloss glass-like surface and touch temperature control.
• Mounted directly on the wall or in the device case.
• Possible to connect an external temperature sensor to the model S2 EXT.
• Lock the setting of the room thermostat by pressing the combination.
• Lower the temperature with a separate timer (timer not included).
• Silent operation in the thermostat.
• Easy function check with LED.

LK Room thermostat S2, 24V NO

Technical data LK Room thermostat S2
Voltage 24 V AC (20...30 V, 50...60 Hz) NO
de-energized OPEN
Switching power max. 22 W (625 mA)
Own power 2 W
Max. 5 pcs LK Actuator 24 V NO per room thermostat
Temperature range 5...45 °C
Input for temperature drop -3 K
The duration of the self-modulation period is 42 min
Self-modulation range 2 K
Color: nest and cover frame white RAL 9003, front glass high gloss white/ice gray
Protection class III
Enclosure class IP30
Storage temperature –25...+80 °C
Relationship humidity (storage) <80% non-condensing
Operating temperature 0...+50 °C
External sensor: length 3 m, model NTC 10 kΩ (optional)
Dimensions 80 × 112 × 16 mm
Covering area with installed cover frame 80 × 112 mm Covering area without installed cover frame 65 × 98 mm

LK Room thermostat S2, 24V NC Is a silent electronic room thermostat equipped with a Triac output and electronic feedback. Available in two models: S2 and S2 EXT. LK External sensor ICS/S2 for floor temperature control. The thermostat is placed on top of the device box or directly on top of the wires brought from the wall. When installing on top of the device box, the supplied cover frame is used.

Spare parts
• LK Cover frame S2, included in the package (product no. 33454).
pay particular attention to:
• Self-technology through a pulse signal improves energy efficiency modulation.
• Modern design and high-gloss glass-like surface and touch temperature control.
• Mounted directly on the wall or in the device case.
• Possible to connect an external temperature sensor to the model S2 EXT.
• Lock the setting of the room thermostat by pressing the combination.
• Lower the temperature with a separate timer (timer not included).
• Silent operation in the thermostat.
• Easy function check with LED.